Mailbox



FIG. 1 is a front, perspective view of a mailbox showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing the lock, hinges, door panel, mail slot, and mounting holes, are for the purpose of illustrating portions of the mailbox, and form no part of the claimed design. 

CLAIM The ornamental design for a mailbox, as shown and described. 